Hay P....,
The real issue is not determining the altitude of the chopper from your
photo, it is your assumption that the chopper pilot is doing something
wrong. (not)
Did you discuss this with the FSDO? (nope)...
Have that discussion and you will add to your knowledge of the FAR's...

Did you know that choppers are required to fly the pattern at the
airport in the opposite direction of the fixed wing traffic, i.e. going
directly at them on base leg? (nope, etc.)
Did you know that choppers are allowed to fly vfr in ifr conditions?
(nope)

As far as Wally World banning cameras, I have one in my jacket 24/7, I
just don't flash it in people's faces, so it has never been
questioned...
Cheers ... Denny